Just checked info a LH flight and agent pointed out no FF number on my reservation. I gave her my MP card and she commented on the newness, as well as the 'odd' number. (I did enter my MP number on my reservation, but it doesn't appear in LH system)

Still cannot retrieve reservations on the LH site using UA MP number (always could in past) She told me that they have seen a lot of 'odd' things from people connecting from UA in the past month, including a lot more mistagged luggage originating from UA.

She wasn't aware of the merger until I pointed it out, but said that definitely LH has also noticed some odd things since 3/3.